A bunch of scientifically proven ways to blow your mind. A Canadian Toy Testing Council 3-Star Award winner! The world is weirder than you think. Want proof? Lo

Presents optical illusions that captivate the imagination by fooling the eye with tricks of perception.

In a series of inter-related stories, husbands, wives and lovers attempt to come to grips with their 'impossible' situations, while the novel itself attempts to

Impossible objects are those about which the philosopher, narrowly conceived, can hardly speak: poetry, film, music, humor. Such "objects" do not rely on philos

An interactive activity and coloring book featuring 50-plus "impossible" optical illusions to color along with, and activities that show kids how to create thei